public void PlotTrajectories(DisposablePlanetarium planetarium,
string main_vessel_guid,
double history_length)
{
PlotCelestialTrajectories(planetarium, main_vessel_guid, history_length);
if (main_vessel_guid == null)
{
return;
}
PlotVesselTrajectories(planetarium, main_vessel_guid, history_length);
}
private void PlotCelestialTrajectories(DisposablePlanetarium planetarium,
string main_vessel_guid,
double history_length)
{
const double degree = Math.PI / 180;
UnityEngine.Camera camera = PlanetariumCamera.Camera;
float vertical_fov = camera.fieldOfView;
float horizontal_fov =
UnityEngine.Camera.VerticalToHorizontalFieldOfView(
vertical_fov, camera.aspect);
// The angle subtended by the pixel closest to the centre of the viewport.
double tan_angular_resolution = Math.Min(
Math.Tan(vertical_fov * degree / 2) / (camera.pixelHeight / 2),
Math.Tan(horizontal_fov * degree / 2) / (camera.pixelWidth / 2));
PlotSubtreeTrajectories(planetarium, main_vessel_guid, history_length,
Planetarium.fetch.Sun, tan_angular_resolution);
}
private void PlotVesselTrajectories(DisposablePlanetarium planetarium,
string main_vessel_guid,
double history_length)
{
{
planetarium.PlanetariumPlotPsychohistory(
Plugin,
main_vessel_guid,
history_length,
VertexBuffer.data,
VertexBuffer.size,
out int vertex_count);
DrawLineMesh(psychohistory_mesh_, vertex_count, adapter_.history_colour,
adapter_.history_style);
}
{
planetarium.PlanetariumPlotPrediction(
Plugin,
main_vessel_guid,
VertexBuffer.data,
VertexBuffer.size,
out int vertex_count);
DrawLineMesh(prediction_mesh_, vertex_count, adapter_.prediction_colour,
adapter_.prediction_style);
}
// Target psychohistory and prediction.
string target_id = FlightGlobals.fetch.VesselTarget?.GetVessel()?.id.
ToString();
if (FlightGlobals.ActiveVessel != null &&
!adapter_.plotting_frame_selector_.target_frame_selected &&
target_id != null &&
Plugin.HasVessel(target_id))
{
{
planetarium.PlanetariumPlotPsychohistory(
Plugin,
target_id,
history_length,
VertexBuffer.data,
VertexBuffer.size,
out int vertex_count);
DrawLineMesh(target_psychohistory_mesh_, vertex_count,
adapter_.target_history_colour,
adapter_.target_history_style);
}
{
planetarium.PlanetariumPlotPrediction(
Plugin,
target_id,
VertexBuffer.data,
VertexBuffer.size,
out int vertex_count);
DrawLineMesh(target_prediction_mesh_, vertex_count,
adapter_.target_prediction_colour,
adapter_.target_prediction_style);
}
}
// Main vessel flight plan.
if (Plugin.FlightPlanExists(main_vessel_guid))
{
int number_of_segments =
Plugin.FlightPlanNumberOfSegments(main_vessel_guid);
for (int i = flight_plan_segment_meshes_.Count; i < number_of_segments; ++i)
{
flight_plan_segment_meshes_.Add(MakeDynamicMesh());
}
for (int i = 0; i < number_of_segments; ++i)
{
bool is_burn = i % 2 == 1;
planetarium.PlanetariumPlotFlightPlanSegment(
Plugin,
main_vessel_guid,
i,
VertexBuffer.data,
VertexBuffer.size,
out int vertex_count);
DrawLineMesh(flight_plan_segment_meshes_[i],
vertex_count,
is_burn ? adapter_.burn_colour
: adapter_.flight_plan_colour,
is_burn ? adapter_.burn_style
: adapter_.flight_plan_style);
}
}
}
// Plots the trajectories of |root| and its natural satellites.
private void PlotSubtreeTrajectories(DisposablePlanetarium planetarium,
string main_vessel_guid,
double history_length,
CelestialBody root,
double tan_angular_resolution)
{
CelestialTrajectories trajectories;
if (!celestial_trajectory_meshes_.TryGetValue(root, out trajectories))
{
trajectories = celestial_trajectory_meshes_[root] =
new CelestialTrajectories();
}
var colour = root.orbitDriver?.Renderer?.orbitColor ??
XKCDColors.SunshineYellow;
var camera_world_position = ScaledSpace.ScaledToLocalSpace(
PlanetariumCamera.fetch.transform.position);
double min_distance_from_camera =
(root.position - camera_world_position).magnitude;
if (!adapter_.plotting_frame_selector_.FixesBody(root) &&
adapter_.show_celestial_trajectory(root))
{
{
planetarium.PlanetariumPlotCelestialPastTrajectory(
Plugin,
root.flightGlobalsIndex,
history_length,
VertexBuffer.data,
VertexBuffer.size,
out double min_past_distance,
out int vertex_count);
min_distance_from_camera =
Math.Min(min_distance_from_camera, min_past_distance);
DrawLineMesh(trajectories.past, vertex_count, colour,
GLLines.Style.Faded);
}
if (main_vessel_guid != null)
{
planetarium.PlanetariumPlotCelestialFutureTrajectory(
Plugin,
root.flightGlobalsIndex,
main_vessel_guid,
VertexBuffer.data,
VertexBuffer.size,
out double min_future_distance,
out int vertex_count);
min_distance_from_camera =
Math.Min(min_distance_from_camera, min_future_distance);
DrawLineMesh(trajectories.future, vertex_count, colour,
GLLines.Style.Solid);
}
}
foreach (CelestialBody child in root.orbitingBodies)
{
// Plot the trajectory of an orbiting body if it could be separated from
// that of its parent by a pixel of empty space, instead of merely making
// the line wider; but always traverse the subtree if the current body is
// hidden.
if (!adapter_.show_celestial_trajectory(root) ||
child.orbit.ApR / min_distance_from_camera >
2 * tan_angular_resolution)
{
PlotSubtreeTrajectories(planetarium, main_vessel_guid, history_length,
child, tan_angular_resolution);
}
}
}
